Jukka MAKELA, Kostas PENTIKOUSIS, Vesa KYLLONEN

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VTT Technical Research Centre of Finland, Oulu, Finland.
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Abstract: Modern mobile devices have several network interfaces and can run various network applications. In order to remain always best connected, events need to be communicated through the entire protocol stack in an efficient manner. Current implementations can handle only a handful of low level events that may trigger actions for mobility management, such as signal strength indicators and cell load. In this paper, we present a framework for managing mobility triggers that can deal with a greater variety of triggering events, which may originate from any component of the node’s protocol stack as well as mobility management entities within the network. We explain the main concepts that govern our trigger management framework and discuss its architecture which aims at operating in a richer mobility management framework, enabling the deployment of new applications and services. We address several implementation issues, such as, event collection and processing, storage, and trigger dissemination, and introduce a real implementation for commodity mobile devices. We review our testbed environment and provide experimental results showcasing a lossless streaming video session handover between a laptop and a PDA using mobility and sensor-driven orientation triggers. Moreover, we empirically evaluate and analyze the performance of our prototype. We position our work and implementation within the Ambient Networks architecture and common prototype, centring in particular on the use of policies to steer operation. Finally, we outline current and future work items.

Keywords: Triggering, Mobility Management, Mobile Networks, Handover, Cross-Layer Information Management

Cite this paper: nullJ. MAKELA, K. PENTIKOUSIS and V. KYLLONEN, "Mobility Trigger Management: Implementation and Evaluation," International Journal of Communications, Network and System Sciences, Vol. 2 No. 3, 2009, pp. 211-221. doi: 10.4236/ijcns.2009.23023.

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